2343203121 has 16 divisors (see below), whose sum is σ = 3615795200. Its totient is φ = 1322023248.

The previous prime is 2343203119. The next prime is 2343203141. The reversal of 2343203121 is 1213023432.

It is not a de Polignac number, because 2343203121 - 2¹ = 2343203119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2343203111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704551 + ... + 707868.

It is an arithmetic number, because the mean of its divisors is an integer number (225987200).

Almost surely, 2^2343203121 is an apocalyptic number.

2343203121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2343203121 is a deficient number, since it is larger than the sum of its proper divisors (1272592079).

2343203121 is a wasteful number, since it uses less digits than its factorization.

2343203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412508.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2343203121 is about 48406.6433560519. The cubic root of 2343203121 is about 1328.2198886583.

Adding to 2343203121 its reverse (1213023432), we get a palindrome (3556226553).

The spelling of 2343203121 in words is "two billion, three hundred forty-three million, two hundred three thousand, one hundred twenty-one".